/
monitor.go
87 lines (70 loc) · 2.3 KB
/
monitor.go
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package gateway
import (
"time"
"github.com/TykTechnologies/tyk/config"
"github.com/TykTechnologies/tyk/user"
)
type Monitor struct{}
func (Monitor) Enabled() bool {
return config.Global().Monitor.EnableTriggerMonitors
}
func (Monitor) Fire(sessionData *user.SessionState, key string, triggerLimit, usagePercentage float64) {
em := config.EventMessage{
Type: EventTriggerExceeded,
Meta: EventTriggerExceededMeta{
EventMetaDefault: EventMetaDefault{Message: "Quota trigger reached"},
OrgID: sessionData.OrgID,
Key: key,
TriggerLimit: int64(triggerLimit),
UsagePercentage: int64(usagePercentage),
},
TimeStamp: time.Now().String(),
}
go MonitoringHandler.HandleEvent(em)
}
func (m Monitor) Check(sessionData *user.SessionState, key string) {
if !m.Enabled() {
return
}
if m.checkLimit(sessionData, key, sessionData.QuotaMax, sessionData.QuotaRemaining, sessionData.QuotaRenews) {
return
}
for _, ac := range sessionData.GetAccessRights() {
if ac.Limit == nil {
continue
}
if m.checkLimit(sessionData, key, ac.Limit.QuotaMax, ac.Limit.QuotaRemaining, ac.Limit.QuotaRenews) {
return
}
}
}
func (m Monitor) checkLimit(sessionData *user.SessionState, key string, quotaMax, quotaRemaining, quotaRenews int64) bool {
if quotaMax <= 0 {
return false
}
remainder := quotaMax - quotaRemaining
usagePerc := (float64(remainder) / float64(quotaMax)) * 100.0
log.Debug("Perc is: ", usagePerc)
renewalDate := time.Unix(quotaRenews, 0)
log.Debug("Now is: ", time.Now())
log.Debug("Renewal is: ", renewalDate)
if time.Now().After(renewalDate) {
// Make sure that renewal is still in the future, If renewal is in the past,
// then the quota can expire and will auto-renew
log.Debug("Renewal date is in the past, skipping")
return false
}
if config.Global().Monitor.GlobalTriggerLimit > 0.0 && usagePerc >= config.Global().Monitor.GlobalTriggerLimit {
log.Info("Firing...")
m.Fire(sessionData, key, config.Global().Monitor.GlobalTriggerLimit, usagePerc)
return true
}
for _, triggerLimit := range sessionData.Monitor.TriggerLimits {
if usagePerc >= triggerLimit && triggerLimit != config.Global().Monitor.GlobalTriggerLimit {
log.Info("Firing...")
m.Fire(sessionData, key, triggerLimit, usagePerc)
return true
}
}
return false
}